 .router{
    text-align: center;
    height:106px;
    line-height:106px;
    position:sticky;
    top:0px;
    background-color:#fff;
    z-index:500;
}
.lis{
    padding:0 10px;
    font-size:25px;
    margin:10px auto
}
.selected{
    font-size: 38px;
    font-weight: 400;
    color:black
}
.unselect{
    font-size: 34px;
    font-weight: 200;
    color:#000;
    font-weight: 300;
}